Honing and stropping device



Aug. 12 1924. 1,504,814

I E. L. c EsPo HONING AND STROFPING DEVICE Fi d pril'50. 1923 2 Sheets-Sheet 1 /u llljmllm INVENTOR BY m ATTORNEYS Aug. 12 1924. 1,504,814

E. L.- CRESPQ HONING AND STROPPINGDEVICE Filed April 30 1923 2 Sheets-Sheet 2 ATTORNEYS Patented Aug. 12, 1924.

rro STATES ERNESTO L. CRESPO, OF GUATEMALA CITY, GUATEMALA.

HONING AND STROPPING DEVICE.

Application filed April 30, 1923. Serial No. 635,704.

To all whom it may concern:

Be it known that I, ERNESTO L.'CRESPO, a citizen of Cuba, residing at Guatemala City, in the Republic of Guatemala, Central America, have invented certain new and useful Improvements in Honing and Stropping Devices, of which the following is a specification.

My present invention relates generally to razor bones and stroppers and more especially to a honing and stropping device for double edge safety razor blades, my pri mary object being the provision of a device by means, of which blades may be successively honed and stropped without the removal of the blades between these operations and with assurance that the blade will be placed at the same angle against boththe honing and stropping surfaces, the means utilized for this purpose being at the same time, at the pleasure of the operator, adapted to strop the blade without honing.

A further object ofmy invention is the provision of a honing and stropping device in which the action of the honing and stropping surfaces against the blade edges will follow as nearly as possible the manner in which a blade is drawn along and across a hone as well as a strop in the hand operation of sharpening a razor and preparing the same for use.

A still further object of my invention is the provision of a device of this nature of neat appearance, which may be easily oper- 'ated, which will be practically fool-proof in use, which will be comparatively simple and inexpensive, which will occupy but small storage space in this use, and which will be effective and efficient for the purposes stated.

In the accompanying drawings which form a part of this specification and in which I have shown the preferred embodiment of my invention at the present time,

Figure 1 is a perspective view of my improved device complete, the slide being shown in partly withdrawn position,

Figure 2 is a horizontal sectional view taken substantially on line 2-2 of Figure 3,

Figure 3 is a' sectional view taken diametrically through the device on the line 33 of Figure 2,

Figure 4: is a detail perspective view of the main operating parts, showing the same in detached relation,

Figure 5 is a detail sectional view through portions of the disks showing the direction controlling rocker and its bracket in elevation,

Figure 6 is a detail perspective view of the connections at the outer end of the blade holder, and

Figure 7 is an enlarged detail vertical section through the casing in line with one of the casing holders and guide rod supports.

Referring now to these figures my invention proposes a device which as a whole is circular in form, its casing 10 including up per and lower sections 11 and 12 provided with circumferential edgewise contacting flanges 13 and 1 1, these sections of the cas ing being held together by virtue of guide rod supporting clips 15 at the ends of internal guide rods 16.

These guide rods 16 as best seen in Figure 2 extend across and within the casing in spaced apart parallel relation at equal distances upon opposite. sides of its axis and have reduced nuts 17 projecting through recesses in the contacting edges of the flanges 13 and 14, brackets 15 having hearing apertures through which the reduced ends 17 of the guide rods are also extended as particularly shown in Figure 7, and also having angularly bent upper and lower tongues 18 which enter conformable slots 19 in the flanges 13 and 14 so that by head ing or burring the extremities of the reduced portions 17 it is obvious that the two halves of the casing are thus locked together.

At one point the flanges 13 and 14 are cut away as at 20 to provide an enlarged side opening between the guide rods 16, and between this side opening 20 and the adjacent ends of the guide rods 16, the casing 'flanges 13 and 14 have bearing members 21 through which the spaced parallel side rods 22 of a slide frame operate.

The slide frame includes in addition to its slide rods 22, an outerv breast plate 23 to which the outer ends of the rods 22 are secured, and an inner bracket- 24 to which the inner ends of the rods 22 are secured, this bracket 24% being provided with aper-' tured side extensions 25 through the aper turs 26 of which the guide rods 16 extend so that in consideration of the sliding connections between the inner end of the opersupporting ating slide and the guide rods 16 and the bearings 21 through which the slide rods 22 are movable, it is obvious that the operating slide as a whole will have an effective guided movement inwardly and outwardly of the casing and diametrically of the latter.

This inward and outward movement of the operating slide is brought about by a handle 27 including a ring 28, which handle is swivelled 'upon a ball 29 at the outer end of'the cylindrical'shank 30 of a blade holder the latter of which consists in the main of superposed blade clasping strips 31 and 32 having blade engaging elements "including lugs 33 and a. stud 34, and of which the lower strip 32 is provided with a slotted offset 35 at its inner endyand, is rigid at itsouter end with the shank 30 the latter of which passes centrally through a threaded opening of the breast plate 23.

The upper blade clasping strip 31 has a,

forked piece 36 at its inner end extending through the slot of the inner shoulder 35 of the lower strip and. forming. a hinged connection between the strips, the outer reduced end 37 of the upper strip 31 being,

as particularly seen in Figures 2 and 6 adapted for engagement by a hollow screw clasp 38 loosely rotatable on and forming a bearing for the shank 30, thisscrew clasp 38 being externally threaded, to engage the threads of the central opening of the breast plate 23 and having an outer knurled head 39 and an inner recess 40. through the latter of which the inner extremity of the reduced end 37 of strip 31 is shiftable. .Thus by turning the tubular clasp 38 as in Figure 6, the blade clasping strip 31 may be lifted and a blade, such as for instance the double edge blade A may be inserted between the blade clasping strips and the upper clasping strip 31 lowered to engage and hold theblade, it being simply necessary to give the tubular clasp 38' a partialrotation in order toclasp the strips 31 and 32-togethcr and thus effectively hold the blade A in position between the slide rods 22. Wlll be understood of course that in placing: or removing a blade inthis manner, the oper ating slide must first be shifted to its outer.

position. 7

Centrally thereof the upper and loWer halves or sections 11 and12 of the casing 10 have bearing studs 41. which'project inwardly and serve to space from the inner surfaces of the casing sections a pair of disks 42 and 43, these disks being secured by virtue of their central openings 44. and

inner nuts 45 to the inner reduced and threaded stems 46'of the bearing studs so that the disks are thus free to oscillate above and below the operating slide and in spaced relation to the casing.

Disk 42 has at one side of its axis av pair of oppositely curved slots 47 and 48' and disk 43 has a similar pair of oppositely curved slots 49 and 50, each disk having a segmental stone 51 and a segmental strip of leather 52 secured in endwise abutting relation to its inner surface along a portion of its peripheral edge as by means of clips 53, it being noted that the leather and stone strips abut at a point alined with the longitudinal center of the slide when the latter is at its inner position as shown in Figure 2 and that the stone 51 and leather strip 52 of one disk are respectively opposite the leather strip and the stone of the other disk so that upon opposite oscillation of the disks the two stones will move across the path of the slide and the blade holder while upon opposite oscillation of the sharpening disks in a reverse direction the two leather strips will work across the slide and consequently across the blade holder.

In order to bring about this oscillation as well as to provide for a change in its direction, the inner bracket 24 of the slide which has a suitable opening 54 seen in Figure 4 for the inner reduced end 55 of an outwardly projecting stem 56 and has openings 57 at opposite sides of its central opening through which the inner ends of the slide rods 22 are secured, is provided with spaced apart side walls 58 having bearing openings at laterally spaced points for a pair of double end actuating pins 56 and 60, each of which pins has a central annular groove 61 to receive the respective bifurcated end 62 of a rocker arm 63 disposed between the side walls 58 of the bracket and provided with a central open-- ing 6.4 through which the stem 56 passes as well as diametrical slots 65 in which a cross pin 66 of the stem 56 is seated in order that rotation of the stem will rock the arm 62? and in this way project the disk operating pins 59 and 60 beyond relatively opposite sides of the bracket and into relatively oppositely curved slots of the disks 42 and 43. The outer head 67- of the stem 56 projects sufiiciently through the casing flanges 13 and 14, with the slide in its inner position as shown in Figure 2, for the operator to grasp the same and by its oscillation rock the arm 63 so that the pins 59 and 60 may be shifted into either the slots 47 and 50 of the disks 42 and 43 if it desired to use the leather strips 52 or each of the slots 48 and 49 of the disks 42 and 43 if it is desired to use the stones 51.

The stem 56 passes inwardly of the bracket 24 through a bearing plate 68, the latter of which and the side walls 58 of the bracket have bendable relatively engaging ears 69 and 7 0, and inwardly beyond the bearing plate 68 the stem projects through a rocker arm controlling member 71 having outstanding spring extensions 72 which engage the rocker arm at opposite sides of the stem as particularly shown in Figure 2 so as to avoid danger of its accidental shifting and require that the stem 56 be manually oscillated in order to bring about reversal of movement of the disks 4-2 and l3.

It will be noted that the handle 27 by means of which the slide as a whole is shifted. inwardly and outwardly actuates the slide through the blade holder and that the inner end of the lower strip 38 of the blade holder has an inner twisted extension 73 plainly shown in Figures 2, 3 and 4 movable through the slot 74 of a U-shaped guide whose outer apertured extensions 7 6 are clamped in connection with the inner ends of the slide rods 22 where the latter enter the openings 57 of the bracket 24, the pitch of the twisted inner portion 73 of the blade holder being such as to cooperate with the slotted U-guide 75 for the purpose of oscillating the blade holder on its longitudinal axis and tilting the blade A carried thereby so that its edges will be placed at alternately opposite sides against either the stones 51 or the leather strips 52 when the slide is shifted inwardly and outwardly. This oscillation of the blade holder within the operating slide takes place by virtue of the slight limited movement that theblade holder has in the direction of its length with respect to the operating slide, the blade holder as well as the blade carried thereby being normally held in a horizontal plane parallel with the casing sides by virtue of springs 7 7 between opposite sides of the inner extremity of the twisted portion 73 of the blade holder and the opposite sides of the U-guide 75.

Thus in operation the slide is first withdrawn from its outer position and the tubular clasp 38 slightly rotated in order that the upper blade holding strip 31 may be raised. The blade is then inserted and the blade holding strip 81 pressed downwardly and again clasped by partly rotating the tubular clasp 38. The direction controlling stem 56 is then shifted so as to move the pins 59 and 60 into the proper disk slots depending upon whether the stones 51 are first to be used in honing the blade or the latter is simply to be stropped by the action of the leather strips 52. When this adjustment has been made the device is ready for operation and it is then simply necessary to hold the casing in one hand and grasp the slide handle by virtue of its ring 28 in the other hand, alternately thrusting the slide inwardly and pulling the same outwardly. At the start of each of these movements the structure above described with respect to the oscillation of the blade holder on'its longi tudinal axis permitted by the slight relative movement between the blade holder and the slide, will bring about the proper placement of the blade edges against either the stones or the leather strips as the case may be, always at the same angle and it is obvious that as during these movements the sharpening disks oscillate and the slide with the blade holder moves diametrically of the disks a movement of the blade edge against the respective sharpening surface takes place much similar to the manner in which a razor blade is moved across a hone or a strop in the hand sharpening or preparing of such blades.

It is also obvious that if the stones are first utilized in the sharpening of the blade, it is possible at the end of any inward stroke of the slide, to shift the direction controlling stem so that the leather strips 52 will be brought into operation, it being plain that this adustment may be effected without removing the blade being sharpened or without varying the oscillation of the blade holder or the angle of tilting movement of the blade.

My invention thus provides a handy im plement of the present character which is simple and easy to a degree that it is practically fool-proof when once the blade is properly seated in the blade holder and my invention further provides an implement of this character which will be uniformly effective and efficient in use.

I claim:

1. In a honing and stropping device, a casing the sides of which has peripheral meeting flanges cut away at one point, guide members extending across the casing at spaced points upon opposite sides of its center and parallel with the casing sides, a slide shiftable through the cut away portion of the casing flanges and having means movably engaging said guides, disks mounted within the casing and oscillatably supported by the casing sides, each disk having a pair of oppositely curved radial slots and each disk being provided along a portion of its periphery with endwise abutting honing and stropping strips of which the honing strip of one disk is opposite to the stropping strip of the other disk, pins shiftable laterally within the inner end of the slide and oppositely shiftable into reverselv curved slots of the disks whereby to oscillate the disks in relatively opposite directions during movement of the slide, a blade holder in the slide having limited movement with respect thereto and having an outer handle attached thereto for the manual shifting of the blade holder and slide, said blade holder and said slide having relatively engaging means for tilting the blade holder with respect to the slide, and means for shifting the disk engaging pins of the slide to reverse the direction of movement of each of the disks,

2, A honing and stropping device includ ing a'casing, a pair of spaced apart disks within and supported by thecasing in opposing relation, having peripheral honing and. st-ropping strips in relatively opposite relation along portions of their peripheries,

, a reciprocal slide shit-table in'lthe casing diametrically between said disk-s, reversible actuating connections between the slide and the disksto shift the latter in relatively opposite directions, and a blade holder carried by and movable with the slide and having limited tilting movement with respect there to as described.

In, a blade sharpener, a casing, a pair ofjopposedoscillatable disks mounted in the ofopposed,Yoscillatable disks mounted in the casin jin spacedapart relation,'a reciprocal silide; shift'alole diametrically in' the casing -between'said disks, a? blade holder moiinted in the slide and tiltable with respect thereto during reciprocation of the slide, sharpening elements carried by the disks, and connectionsbetween the slide and the saidl'disks for oscillating the latter 'in relatively. opposite directions during reciprocatibnfo-f the slide, the sharpening elements of said disks including peripheral honing and stropping strips, and said connections between the slide and the disks being reversible to bring either the honing strips or the stroppingstrips across the blade holder.

5. In a honing and stropping device, a pair of spaced oscillatable members having sharpening elements, a blade holder reciprocal between said members and having means to support a blade therein and tilt the'same during reciprocation of the holder, and connections for oscillating said members during reciprocation of' said blade holder.

"6. In a honing and stropping device, a

pair of spaced oscillatable members having peripheral honing and stropping elements in relatively reversed relation, a reciprocal slide shiftable between said members and having a blade holder therein tiltable during operation thereof, connections between said slide and said members for oscillating the latter in relatively opposite directions, and means for shifting said connections whereby to reverse the direction of movement of each of said disks.

7. A, razor sharpening device including a pair of spaced apart oscillatable sharpening members, and a blade holder reciprocal between said members having connections therewith for oscillating the members during reciprocation of the blade holder and also having means to tilt a blade held thereby against the said sharpening members.

" ERNESTO L. ORESPQ. 

